Sun was a somewhat anti-authoritarian leftist. The KMT is very rightist.
Sun was a populist and a radical democrat. The KMT is despotic and dictatorial.
Sun’s biggest heroes were Abraham Lincoln and Karl Marx. Meanwhile, the KMT supports very rightist economic policies and uses lies and fearmongering to keep Taiwanese on the Waishengren plantation.
Sun believed in governments by, for, and of the people. The KMT believes in governments by, for, and of the Waishengren/Beijingese aristocracy.
Now what do they have in common?
They both see/saw themselves as Chinese.
Wouldn’t that be like Karl Marx hero worshipping Martin Luther because both were German? Or Strom Thurmond hero worshipping Rosa Parks because both were American? Or Rene Levesque hero-worshipping Pierre Trudeau because both were Canadian?
Sun founded a nationalistic leftist party that was hijacked by fascists on one side and Stalinists on the other. At least the Stalinists, even though they are now totalitarians with no fixed ideology aside from the amassing of immense power and wealth at the expense of the people, were honest enough to not use the name KMT.
Ironically, the only Chinese politicians who live up to Sun Yat-sen’s ideals are Leung Kwok-hung and maybe Emily Lau, and neither is particularly fond of either the PRC or the ROC.
The DPP and TSU better reflect the ideals of Sun than the Blue parties, and I don’t particularly agree with their scorched-earth policy with regards to the elimination of Sun Yat-sen, although I understand why it may not be a bad idea, given what the fascists have turned him into.